304 Flange Manufacturer

Hebei Shengtian Fitting Group Co., Ltd.A professional manufacturer of high and medium-pressure pipeline components, including flanges, elbows, tees, reducing fittings, pipe caps, bends, and socket-welds, in various specifications of carbon steel, stainless steel, and alloy steel, in compliance with national, American, Japanese, German, and British standards. With an annual production capacity of over 100,000 tons, registered capital of 180 million yuan, and a staff of 220, we hold all necessary production licenses and business permits. Our products have been integrated into over 60 networks in industries such as China Petroleum, China Petrochemical, CNOOC, State Grid Corporation of China, chemicals, thermal power, and new energy. We strive for quality! We strive for service! Our headquarters is in Hebei.Hebei Shengtian Fitting Group Co., Ltd.Everlasting themes! Our entire staff warmly welcomes friends from home and abroad to visit our company for inspection, discussions, and cooperation.

Flat Weld Flange- Product Overview

Flanged plate welding is convenient for material procurement, simple to manufacture, cost-effective, and widely used; however, it has poor rigidity, so it should not be used in piping systems for chemical processes that require high vacuum or in highly hazardous environments with flammable or explosive materials. The sealing face types include flat and raised faces. Common standards include HG20592~20635 of the standard chemical industry, GB/T9119 of the national standard, and JB/T81 for machinery. The welding method involves inserting the pipe into the flange for welding. Flanged plate welding is suitable for steel pipe connections with a nominal pressure not exceeding 2.5MPa. The sealing face of the flat welding flange can be made in smooth, concave-convex, and tenon-groove styles. Smooth flat welding flanges are commonly used in mild medium conditions, such as low-pressure non-purified compressed air and low-pressure circulating water. They offer resistance to corrosion, acid and alkali resistance, long service life, reasonable pricing, smooth surface, and aesthetic appearance with strong physical properties.
Common material grades for flat welding flanges.
Stainless Steel; ASTM A182, F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8, 00Cr19Ni10.
Carbon Steel; ASTM A105, 20#, Q235, 10#, 45#, 16Mn, ASTM A350, LF1, LF2, CL1/CL2, LF3, CL1/CL2, ASTM A694, F42, F46, F48, F50, F52, F56, F60, F70, F65.
Alloy Steel; ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ.
Basic Parameters of Flanged Plate Welding Fittings
Nominal Bore Size; DN15 ~ DN2000mm, NPS1/2 ~ 80mm.
1. Flange Outer Diameter: 75mm - 2190mm
2. Bolt hole center circle diameter: 50mm - 2130mm
3. Bolt hole diameter: 11mm-30mm
4. Number of bolt holes: 4 - 48
5. Thread: M10 - M27
6. Flange Thickness: 12mm - 58mm
7. Outer Diameter of Pipe: A(17.2-2032MM) B(14-2020MM)
8. Flange Inner Diameter: A (18-2036MM) B (15-2024MM)
9. Flange theoretical weight: 0.36kg - 234.6kg (DN1800)
10. Flange Pressure: 0.25MPA - 4.0MPA
Flange Packaging: Wooden box or others.
Flange Color: Natural Metal Finish.
Hebei Shengtian Fitting Group Co., Ltd.Adhering to the business philosophy of quality-centric and customer-first, our company's product quality and service quality have been highly praised by our customers!